Support `overwrite` option in RegisterTable

[HonahX]

Is your feature request related to a problem? Please describe.

From a slack discussion

IRC spec added an overwrite option for registerTable

This will enable use case where updating the entire metadata is needed.

It would be good for polaris to support this to remain compliant with IRC spec

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

Additional context

No response

[CodingBangboo]

I'm interested in adding this new feature. May I work on it? Thanks a lot.

[HonahX]

@CodingBangboo Assign to you! Thanks for taking this!